Prius (2010-12) :: ICE Shutdown Causes Surge / Jolt Forward
Feb 19, 2013
I have a Gen III Prius 2010 with about 50k on it. I've noticed over the past month that when the ICE shuts down at a stoplight, the car will surge forward a bit. If my foot isn't on the brake really hard, it will translate to the car actually moving forward until the ICE is totally off. If my foot is on the brake hard, you can feel it push against the brakes, and then the car settles back in place. It doesn't happen every time, so it still takes me by surprise.
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I've had my 2010 Prius II for less than a month and am not particularly happy with it. I've experienced a slight surge forward when braking on uneven pavement at low speeds at least 4-5 times in 900 miles. This isn't something I can duplicate on demand. When I took it in to the dealer after the first time and asked if the ABS fix had been made to it, they told me my car wasn't part of the "campaign" (aka recall) because it was manufactured in March and the ABS problem had been solved by then. However, it sounds exactly like the problem people were discussing in Jan/Feb.
Once when I put it in reverse in a parking lot it lurched backward (my foot was on the brake) suddenly -- not far, but it was an alarming sensation. It also has a high pitched, barely audible whine when moving (can't hear it if I put on the radio). The mechanic said that was the normal sound of the battery, but I don't remember it from other cars I test drove. Is it normal?
I'm keeping an eye on the dome lights every time I park because I found them on one night (they'd probably never shut off after I parked the car during daylight hours) -- it could have been that the light was switched to "on" rather than "door," but now I'm paranoid and constantly check to make sure they're off when they're supposed to be, for fear of wearing down that little 12 v battery. Not fun.
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I purchased a 2012 Elantra Limited w/Tech last Wednesday and it has about 250 miles on it now. Downshifting is kind of hard. I've been driving with Eco mode on but have noticed the same thing w/o it on.
I'll get up to 45 mph and then let the car coast, every time the car downshifts a gear I feel it in the car. It causes me to jolt forward a little bit and is not very smooth. It shifts the same way while accelerating but then I don't really notice it b/c I'm speeding up.
It is annoying while just coasting b/c it feels like the car is braking a little every time it drops down a gear. Also, if it pushes me forward a little bit then the car probably is braking a little which seems kind of against the point of coasting...
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I just purchased this car & thought there may be a learning curve to dealing with the brakes, but I think it may be abnormal.
When braking, I apply more & more pressure smoothly down on the brakes, but no matter how evenly, slowly, and smoothly I try to remain when braking, there is a point when it abruptly brakes to jolt the passengers forward and make me look like a terrible driver, lol. It provides for a smooth decline in speed until I'm almost stopped, then it does it. Jerks us to a stop. So I've learned to apply even pressure and right before that is about to occur, lift up on the brakes and restart that slow pressure to avoid it happening.
I can deal with this because it's not that big of an inconvenience once I've gotten used to it, but I am just worried it may turn into something more or who knows, could be an easy fix. I had the car inspected by a Toyota dealership before I purchased it, and they said that everything was in great condition aside from windshield wipers. It has 81,000 miles, one owner, clean carfax.
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I don't know if this is related, but my car has not shifted as well as it did before I gave it my oil change. The car only has 3K miles, new Hyundai oil filter, and Mobil 1 Synthetic 5w-20.
It's not a major dip in performance, but enough for me to know its different. One example is when I come to a stop, the car seems to surge forward a little bit. Another is that is shifts hard from time to time when I give it gas.
Going uphill, it just doesn't have the power like it did. Also, it feels that it's not in the right gear..like 5th or 6th gear. It's hard to describe the symptoms. The weird part is that the MPG is the higher than normal.
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I purchased a 2009 Hyundai Accent Automatic with less than 50000 Miles. I recently had to replace spark plug connector due to rats. Now, having issues with getting it to drive in the mornings. Description;I let the car warm up about 2 minutes before putting it in drive. Once I let my foot off of the brake the car begins to jolt forward and won't stop until I put my foot back on the brake. Even while holding the brake the car jolts but won't go forward. I have to put the car back in Park before it will stop. This goes on for about 15 to 20 minutes. Then, as if there were never any problems, the car drives as it is supposed to. *I have turned the car off and restarted but the car still jolts forward until it decides not to.I have checked the transmission fluid and it doesn't appear dirty but maybe low. Would low transmission fluid level cause this type of behavior? I am on a budget and a huge transmission bill is not really something I can afford right now. But I need to be able to get to work everyday. I can't imagine that the transmission is going up when the car has less than 50000 miles on it. I've had it since the middle of January.
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2010 w/ 16k miles
5 hrs after shutdown i head something running under the car,, was louder under the car vs listening thru the inside,,, sounded like a fuel pump or small fan.
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Since the weather has dropped a little I was wondering if it's normal that the car sitting on in the drive way, on, would idle up a little just before shut down. I mean shutdown to use the battery not shut down turn the car off. It idles fine for the warm up stage then just before it shuts down to be available for ev mode it spins up a little.
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I have a 2010 IV and after driving for an extended period and then shutting the car off I get a loud noise about a minute or a little more after shutdown. The best I can describe it is that it sounds like someone is dropping a 3 pound dead chicken from about 10 feet up onto my hood. It is consistent and is not any of the whirring or buzzing noises I normally hear. I also have a 2009 Touring and have never heard anything like this.
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My Prius is having a problem during cold start. When I bought it, the cold start was very energetic with a high rev tone then gradually regulate to a normal pace and petrol engine shuts down. But about 4 months I noticed the tone of the cold start has changed, it starts with a weak and low engine rev and delays to turn off the engine. Today it took about 10 mins to power off the engine. Got 2 months I changed my 12V battery (Bosch now), thought that these symptoms was to notify that battery is failing. But the problem is persistent despite I put new battery..
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Earlier this winter and last year, the forum had discussed the occasional fast idle in the 3.6L. Symptoms include the engine idling at 950-1000 RPM and the car feeling like it wants to surge forward. I had the problem twice during heavy snowstorms in February, but nothing really since...until this past week.
The weather here in Chicago has been in the early 90s and I've had the AC cranked. At the same point, I've had the fast idle event occur at least 5-6 times in the past week. Almost every time it has occurred while moving in very heavy traffic. Have others seen something similar in very hot weather?
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I had the tranny/transfer case flash done sometime ago, which yielded smoother driving in "D" mode. However, I noticed that when braking in "S" mode, the downshifts actually cause the car to surge forward strongly. It's disconcerting enough that I now avoid driving in "S" mode unless I need to merge into traffic quickly; even then, I prefer shifting manually instead.
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2002 Chevy Monte Carlo SS 6cyl 100,000 miles
Symptom, loss of horse power (from a stop and going uphill), surge or lunge forward when accelerating (misfire?), rough idle (occasional knock). Maintenance, regularly change all filters and fluids, recently had the m.a.f cleaned and changed air filter, spark plugs and wires, oil.
There have been times in the past year or so when the car would crank but not start. Especially when the car was hot. Wait a couple minutes and it would start. Also a couple of times the car would shake fairly hard when started, get up to speed and it was fine.
I have had people tell me anything from a clogged catalytic converter to bad fuel injectors or fuel pump.
Scanned the car last week. No codes showed up. Never had a Check Engine Light.
I forgot to mention that every once and a while the car will jerk when accelerating. I have a coworker who said his truck started to jerk forward and later would not start at all. Our mechanic said it was the fuel pump. I I will see what that does for him.
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My 2000 Lexus GS 300 has done the following three times when I've been inching forward by lightening on the brake (not touching the gas pedal): slight engine surge moves the car forward and the brakes don't work. I have to throw the car into "Park" to stop. Had it checked each time (twice by my local shop and once by the dealer) and they find nothing amiss. These three incidents have occurred several weeks apart, during cold weather. My car has 98,000 miles on it and has been very well maintained.
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I have had very few automatic transmissions in my lifetime, so I know less than I suppose I should. This one's a C-6. When I start the engine in the morning, shifter in the Park position, I often feel a very slight, very short tendency for the van to try to move forward. Why?
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As I was entering my driveway the other night, as soon as the RF tire went from the road surface to the dirt of my driveway, the car surged a little, then the dash lit up with the yellow triangle, traction control, check engine and "check hybrid system". From there the car went into safe mode, and max was about 12 MPH. I have limped it around some, the ICE will not start, and I tried resetting the ECU's by disconnecting the battery with no luck. I downloaded the codes I have listed above. My car is a 2010 III with 93K miles on it. What should I expect here? Inverter? Is it covered by warranty?
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My 2002 Buick Lesabre has about 160,000 miles on it I keep up with maintenance regular oil changes and what not. Today when I am driving to work and right as I get on the freeway my car starts lurching forward and slowing down repeatedly so I pull over turn the car off look under the hood everything looks normal to me. I wait a bit start the car up and the lights on my panel go from the dimmest they can be to blinding bright and I could not adjust the brightness at all. Any way the car drove fine the rest of the way but the lights were bright as can be the whole way there. What could be causing this? Bad battery?
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I have a 2012 Prius with 15000 miles on it. In the year I have had it, I have had this problem a few times. On rare occasions while I am braking the car seems to lurch forward. In particular I have noticed it while braking and hitting a bump. The problem is that when this happens the car seems to jump forward while the brakes are being applied. My foot is on the brake when it happens, but I am not braking suddenly. That rules out any anti-lock braking. I have had the dealer look at it but since it didn't happen on their test drive they couldn't figure anything out. They did open a case on it in case anything comes up.
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Twice today with cooling temps (45 during the day, closer to 30s on way home) while shutting down after being put in park my Prius did the "lurch forward and shudder." This is something new! Fuel has been purchased consistently from the same Shell station, she's garaged at night and MPGs are averaging 45... OK but nowhere near my great warm weather mileage. We are at close to 2200 on the odometer if my memory is working right - 2012 4 version. Happened once at the bank after work, once in the garage, level ground.
Not sure what is going on... this is new to me with a new car....
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My 2013 goes 7mph with the foot off the gas. Why is it doing this and is there any way to correct this?
Is this normal? I have to keep my foot jammed on the brake to stop the car from lurching forward.
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Ok, I get that a regular car with an automatic transmission will creep forward unless you keep your foot on the brake. Why does that happen in our cars when they are in EV mode at a stop? Unless the pedal is pressed to send power to the electric propulsion system why shouldn't it just sit there absent influence from gravity?
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